Insert-sheet for books.



E. .l. RIEGEL.

INSERT SHEET FOR BOOKS.

APPLICATION FILED JAN. 15. 1915.

1,177,806. 1 Patented Apr. 4,1916.

4 4 y a'cio'awcg THE COLUMBIA PLANOGRAPII C0,, WASHINGTON, 0. c4

,. UNI ED STATES PATENT OFFICE.

ERIE J. RIEGEL, OF ROCK RAPIDS, IOWA.

INSERT-SHEET FOR BOOKS.

. To all whom it may concern Be it known that I, ERIE J. Human, acitizen of the United States, residing at Rock Rapids, in the county ofLyon and State of Iowa, have invented new and useful Improvements inInsert-Sheets for Books, of which the following is a specification.

Thisinvention relates to an insert sheet or leaf for books, its mainobject being to provide an insert sheet for containing illustrations orother matter requiring space greater than the ordinary leaves of thebook, which insert sheet may be bound within the book in a ready andsecure manner and readily and conveniently folded to accord in size withthe ordinary leaves of the book.

A further object of the invention is to provide an insert sheet having abinding portion and lines of fold, together with flexible protectingmeans adapted to protect the sheet along the lines of fold, and'also topermit the sheet to be repeatedly folded without breaking, tearing orcracking along the lines of fold. V

The invention consists of the features'of construction, combination andarrangement of parts herein fully described and claimed, reference beinghad to the accompanying drawings in which Figure 1 is a plan view of anopen book, showing the application of the invention, the insert sheetappearing in outspread condition. Fig. 2 is a view of the insert sheetremoved and in folded condition. Fig. 3 is a. view of the rear surfaceof the insert sheet.

Referring to the drawing, 1 designates the improved insert sheet, which,as shown in the present instance, is of oblong rectan gular form and ofgreater length or depth than width. This sheet consists of a series ofsections, adapted to be folded upon division lines to dispose thesections thereof in superposed relationship so as to be approximatelyequal in size to any one of the sections and to the ordinary leaves 2 ofthe book 3 in which the said insert sheet is bound. In the presentillustration, the sheet consists of a series of rectangular sections 4,5, '6, 6', 7 and 7, which are separated by the central vertical foldline 8 and the transverse fold lines 9 and 10 into a plurality ofsections, as set forth, which are ,all of the same size or dimensions.The section 4 is provided at its inner end margin with a binding portion4 coextensive in length Patented Apr. 4, 1916.

Application filed January 15, 1915 Serial No. 2,458.

therewith and adapted to be bound with'the leaves 2 in the book in anyordinary manner. It will, of course, be understood that the inventionmay be applied either to permanently bound leaves, or to so called looseleaves. In the illustrated example, the sheet 1 is of a width twice thewidth of the leaves 2 and of a length three times the length of theleaves 2, but the size of the sheet may be varied as occasion requires.

As stated, the fold lines 8, 9, and 10, which are arranged at rightangles to each other, divide the sheet into sections which are adaptedto be folded along said lines so as to restrict the size of the sheet tothat of a single section, and for the purpose of strengthening andreinforcing the sheet along the binding portion and lines of fold, Iprovide central and corner reinforcing strips 11 and 12 along thebinding portion 4 and the intersecting corner portions of the sheet,whereby the portion 4 is rendered rigid enough to be bound firmly andsecurely, although the sheet 1 may be made of thin paper. Theseprotecting strips 11 and 12 also reinforce the body of the sheetadjacent to the binding portion, thus greatly increasing its strengthand durability. Similar longitudinal and transverse strips 13 and 14 areprovided upon the back of the sheet along the fold lines 8, 9 and 10,,so as to strengthen and reinforce the sheet along the lines of fold. Theprotecting strips may be in the nature of binding cloth or tape 'gummedor pasted inposition, and the strips 13 and 14 are arranged to overlapthe lines 8, 9 and 10 so as to equally reinforce the sheet on oppositesides of the line of fold. It will thus be apparent that the sheet maybe folded repeatedly without breaking, tearing or cracking along thelines of fold.

The improved sheet is especially designed for use in making plats, cuts,pictures,

drawings and diagrams, etc., where the ordinary leaf of a book is ofinsuflicient dimensions, but it is desired to have the insert sheet foldwithin the dimensions of the book, as it provides an exceedinglyefficient type of sheet for this purpose. It may also be employed foruse in various other kinds of books, for illustrative and otherpurposes, etc. I

I claim A book having a large insert sheet, said sheet having fold linesat right angles to each other dividing said sheet into sections edge ofone section, whereby the sheet is bound between the leaves of the bookand may be folded to dispose the sections thereof in superposed relationto each other and Within the dimensions of the book; strips of flexiblereinforcing material secured to the sheet along the lines of foldbetween the divisions of said sheet; and reinforcing strips havingportions disposed at an angle to each icopies ofthis patent may ,beobtained for five cents each, by addressing the Commissioner 01"Patents,.-i

other secured to the upper "and lower edges secured along thelongitudinal edges of the of the binding extension and other portions Intestimony whereof I aflix mysig nature in presence of two Witnesses.

Witnesses: V

FREDA L. HosNER, ALBERT KLAHNV Washington, D. 0.

ERIE J. RIEGEL.

